Quote Originally Posted by Zumi View Post
Too many times have I bought something that was factory overclocked and it would end up crashing, I actually went back and underclocked it. Some companies are really bad at overclocking their cards, so I would just stay away from them alltogether.
Been using a MSI factory OCd card for years now, without any problems. If it crashes, it's faulty and that can happen with non-OCd components too.

The advantage of factory OC is that the manufacturer guarantees you it will work at those clocks. If it doesn't, then you get a replacement, simple as that.

I'd go for a 660Ti at this point, the 600 series have good performance and are more efficient than 400/500 series. In the end, paying more for a 660Ti will be outweighted by the power costs a cheaper 500 series will cause.